'Dexter: The Seventh Season'

The eighth, expected-to-be-final round of the Showtime series begins June 30 ... and it's hard to imagine how it could be more of a game changer than this set of episodes, in which police detective Debra (Jennifer Carpenter) discovers her half brother Dexter's (Michael C. Hall) secret life as a serial killer.

As she struggles over what to do with that information, Dexter becomes involved with a woman (Yvonne Strahovski, "Chuck") who has her own dark past. Ray Stevenson ("Rome") and Jason Gedrick also have major guest roles. *** (Not rated: AS, P, GV) (Also on Blu-ray)